Learners say, we learn 83% through the use of sight, compared with less effective ways to learn: hearing (10%), smell (4%), touch (2%) and taste (1%). In the use of visual for a wide range of materials (visual boards, charts, overhead transparencies, slides, computer-generate presentations), there are basic principles of basic design. Assess a visual material or presentation (a transparency of slide) using the following criteria:•Visual elements (pictures, illustrations, graphics):1.Lettering style or font- consistency and harmony2.Number of learning style- no more than 2 in a static display (chart, bulletin board)3.Use of capitals- short titles or headlines should be no more than 6 words4.Lettering colors- easy to see and read. Use of contrast is good for emphasis5.Lettering size- good visibility even for students at the back of the classroom6.Spacing between letters- equal and even spacing7.Spacing between lines- not too close as to blur at a distance8.Number of lines- No more than 8 lines of text in each transparency/slide9.Appeal-unusual/ catchy, two dimension, interactive (use of overlays or movable flaps)10.Use of directional-device (arrows, bold letters, bullets, contrasting color and size, special placement or an item.